When did the Cuban revolution take place

Alot of points! ! what was the greatest achievement of el libertador, simón bolívar? a. he became a military strongman in peru. b. he freed venezuelans from spanish rule. c. he bernardo o'higgins liberate chile. d. he united mexicans of all races against spain.

Where did people have to work with great organization to be successful at farming? a. on the yellow river basin c. on the hangzhou bay b. on the yangzi river basin d. on the hubei basin

What is the approximate area of a circle with a radius of 15 feet